JP3854637B2

JP3854637B2 - Inner cycloid crank device for a reciprocating piston machine, particularly for an internal combustion engine having cylinder rows facing each other

Info

Publication number: JP3854637B2
Application number: JP52722396A
Authority: JP
Inventors: ゲルトフィッシャー
Original assignee: Bayerische Motoren Werke AG
Current assignee: Bayerische Motoren Werke AG
Priority date: 1995-03-14
Filing date: 1996-03-01
Publication date: 2006-12-06
Anticipated expiration: 2016-03-01
Also published as: US6012423A; DE59602332D1; ES2134599T3; EP0815370A1; DE19509155A1; WO1996028669A1; EP0815370B1; JPH11502284A; KR100400069B1; CN1178574A; CN1085802C; KR19980701248A

Description

本発明は、請求項１の前提部分の構成による、往復ピストン機械用、特に対向位置するシリンダ列を具備する内燃機関用の内サイクロイド式クランク装置に関する。
直径上に配置されたシリンダ対を具備する内燃機関にとって、前記の形式のクランク装置は既に提案されている（ドイツ特許出願第１９５０４８９０．３号明細書を参照）。この装置では、内サイクロイド式クランク装置または往復駆動装置をできるだけ簡素化するために、１つの面内で同方向に往復運動しかつ両端にピストンを担持する２つのピストン棒に対し、これらピストン棒の間に直角に指向された唯一の直線案内装置が設けられている。この直線案内装置は、ピストン棒側の往復偏心体の間に配置された唯一の案内偏心体を含み、この案内偏心体は、機械ケーシング側で案内される直線案内要素と協働する。
直線案内装置の第１の例によれば、案内要素として、一体形で形成されたカプラーを具備するワット連接機構(Wattscher Lenker)が設けられ、カプラーにおいて周囲を閉止された軸受開口には軸方向で半分ずつの部分から構成された案内偏心体が配置されている。直線案内装置の別の例によれば、案内要素として、軸受開口の軸線の面内で半分ずつに分割されたスライド部材が設けられ、このスライド部材が、釣合い質量と一体に結合された一体形の案内偏心体と協働する。両例において、それぞれ３つの偏心体からなる多部品の組合せが、補助要素により１つの構成ユニットに合体される。
本発明の課題は、３偏心体の組合せの構成を避け、それにもかかわらず、それぞれの直線案内要素が、周囲を閉止された軸受開口を用い、案内偏心体上に配置可能であるように、上述した形式の内サイクロイド式クランク装置を改良することである。
この課題は、本発明により、請求項１に記載した措置をもって解決される。すなわち、３つの偏心体が、往復偏心体と隣接する案内偏心体との間に設けられた少なくとも１つの連結肩部を具備する一体構成部品を形成し、この連結肩部がクランクピン方向に次のような延設範囲を有していること、すなわち、案内偏心体上における直線案内要素の回転可能な位置決めのために、直線案内要素が、周囲を閉止された軸受開口を用い、連結肩部側の往復偏心体を越えて導かれ、連結肩部の範囲で案内偏心体に対し横方向に変位可能であるようなクランクピン方向の延設範囲であること。
本発明の特長は、一体の３偏心体の組合せが、周囲を閉止された開口を有する負荷可能性の高い直線案内要素とともに、特に高い強度と運転確実性を有することである。この場合、クランク装置部品のペアリングは簡単な組立により傑出し、つまり、直線案内要素を先ず往復偏心体を越えて直線移動させ、引き続き連結肩部の範囲で案内偏心体に対し横方向に移動させ、そして最後に案内偏心体の方向に直線移動させ、それによって直線案内要素が案内偏心体に結合される。
本発明は、１つの往復偏心体と案内偏心体との間に唯一の連結肩部が適宜の長さで構成されている場合、例えば、ワット連接機構のカプラー、スライド部材のカプラー、又は案内のために用いられる外側の走行リングを具備するころ軸受のカプラーのような、一体形に構成された直線案内要素の配置を可能にする。
本発明の有利な構成では、クランク装置の負荷を対称的にするために、案内偏心体が連結肩部を介して各往復偏心体と一体結合しており、この際、案内要素は、本発明により、連結肩部の延設範囲に適合して寸法決定されかつ軸受開口の軸線に対し横方向で分割された部品からなっている。
一体の３偏心体構成部品の本発明による上述の構成は、本発明により構成された連結肩部を含め、有利にはアンダーカットを伴わずに成されていて、従って３偏心体構成部品においてそれぞれの負荷に適合されたコスト安の製作が、重金属鋳造品、非鉄金属鋳造品、または軽金属鋳造品として、または焼結部品として有利に達成可能である。
上述したように本発明により、案内偏心体のための周囲を閉止された軸受開口に対し横方向に案内要素を分割することは、特に有利にはワット連接機構のカプラーに適用され得る。カプラーを中実に構成する代わりに、実際の負荷を考慮し、カプラーを比較的薄い従って特に軽量の２つの部品から構成することが可能であり、この場合、これら部品は必要な強度を皿状構成から得ている。
２部品式で構成されたカプラーは、好ましくは同じ部品から形成されていて、この場合、第２の部品は、第１の部品の本体軸線の周りに第１の部品を反転させることにより達成されている。唯一の工具から製造される部品のこの同一部品構成は、板金プレス部品として有利な製造と結びついている。しかし、カプラー部品を、精密鋳造部品、軽金属圧力鋳造部品、または焼結部品として構成することも可能である。
中実に実施されたカプラーを具備する内サイクロイド式クランク装置におけるワット連接機構に対しては、揺動アームをカプラーのフォーク状の端部分に装着することが知られている。カプラーが２つの同一部品から構成されている場合、揺動アームの前述の枢着態様を維持してカプラー部品を軸方向に間隔を置いて配置することが可能で、それによってクランクピン方向におけるそれらの寸法は半分ずつの構成に比べて小さく、それに応じ、有利には、連結肩部は対応的により短い延設範囲を有している。これにより、一方において曲げ剛性のある３偏心体構成部品となり、他方において間隔を置いて平行に隣接するシリンダの選択が一層自由となる。２つのカプラー部品の軸方向間隔は、好ましくは、案内偏心体とカプラー部品の案内軸受突部との間に配置された２部品式の滑り軸受シェルの外周を周回するフランジを介して決定され得る。カプラー部品を案内軸受突部を介してプレス嵌合により滑り軸受シェル上に配置することは、さらに軸間隔のロックの手助けとなり、この場合、カプラー部品の枢着ブッシュ内に配置された軸受ピンが特にカプラー部品の相対回転防止のために用いられる。
カプラー部品は、共通の滑り軸受シェルと協働する他に、別個の滑り軸受リングを介して案内偏心体と回転可能に協働することもできる。さらに、両方のカプラー部品に対し１つの共通のころ軸受を設けることが考えられ、また、各カプラー部品に対し別個のころ軸受を設けることも考えられる。
以下に、本発明を図面に示す実施例により詳細に説明する。
図１は、往復ピストン内燃機関の内サイクロイド式クランク装置において本発明により構成された部分の分解斜視図である。
図２は、図１に示すクランク装置の部分を部分的に組み立てた状態で示す分解斜視図である。
図３は、組み立ての完了したクランク装置の斜視図である。
図１において、ここでは非図示の往復ピストン内燃機関は対向位置するシリンダ列を備え、これらのシリンダ列で対をなして配置されたシリンダの軸線は、クランク軸線２に対し直角に指向されている。この往復ピストン内燃機関の内サイクロイド式クランク装置１において、単に線により表されたクランク軸には符号３が付けられている。
鎖線４で表されたクランク軸３のクランクピンには３つの偏心体５、５’、６が回転可能に配置されていて、案内偏心体６とこれに対し直径上に対向配置された２つの往復偏心体５、５’は、同方向に往復運動するように制御される非図示のピストン棒のために設けられている。案内偏心体６は、ピストン棒の往復方向に対し直交する直線案内装置の直線案内要素７と協働し、この場合、直線案内要素７は案内偏心体６を軸受開口８内に収納する。
本発明において往復偏心体５、５’および案内偏心体６は、各往復偏心体５、５’とそれらに隣接する案内偏心体６との間にそれぞれ連結肩部９、９’が設けられているように一体構成部品を形成し、連結肩部９、９’は、それぞれ、軸受開口８の軸線に対し横方向で分割された直線案内要素７における部品１０、１０’が、それぞれ周囲を閉止された開口８’、８”を用いて案内偏心体６上に配置可能であるように、クランクピン方向の延設範囲をもって設けられている。特に図１に示す矢印が表すように、各案内要素部品１０、１０’はそれぞれの往復偏心体５、５’を越えてそれぞれの連結肩部９、９’の範囲に導かれ、引き続きこの範囲でそれぞれの開口８’、８”が案内偏心体６と整合するまで案内偏心体６に対し横方向にずらされ、引き続き各案内要素部品１０、１０’が案内偏心体６上に位置決めされる。
往復偏心体５、５’および案内偏心体６がほぼ同じ大きさの直径の場合、直線案内装置部品１０、１０’の前述のような組み立てを容易にするために、それぞれの軸受開口８’、８”は、直径に関し、例えば、案内偏心体６と、開口８’、８”を形成する部品１０、１０’の案内軸受突部１２、１２’との間の２部品式の軸受シェル１１（図２）の寸法だけ、より大きく選択される。他の可能性は、往復偏心体５、５’の直径を案内偏心体６の直径よりも小さく選択することである。
図１より判るように、両方の往復偏心体５、５’の間に案内偏心体６を中央に配置した本発明による一体３偏心体構成部品は、単に部分的に図示された内サイクロイド式クランク装置１の均一な負荷のために、同じ長さの連結肩部９、９’を有する。このクランク装置１とワット連接機構１３との組み合わせにおいて、揺動アーム１４を介して直線案内されかつ部品１０、１０’から形成される、ワット連接機構１３のカプラー１５は、直線案内要素７を形成する。カプラー１５を案内偏心体６上で軸方向に間隔を置いて取付けられた２つの部品１０、１０’から構成することにより、揺動アーム１４の枢着がこれら部品１０、１０’の間で有利に成される。さらに有利には、カプラー部品１０、１０’を軸方向に間隔を置いて配置したことにより、案内偏心体６の方向のそれらの寸法を小さくすることができ、このことは、連結肩部９、９’が比較的小さいという長所を追加的に導く。
連結肩部９、９’が短いと、特に剛性ある一体の３偏心体構成ユニットが得られ、この場合、さらに、連結肩部９、９’の横断面および表面形状は次のことにより剛性強化に寄与する。すなわち、これら連結肩部９、９’の周面が、往復偏心体５、５’の軸線の方向で部分的に延長された往復偏心体５、５’の滑り軸受１６の円筒状周面と、案内偏心体６の軸線の方向で部分的に延長された案内偏心体６の滑り軸受１７の円筒状周面とにより形成されていることである。
図１から見てとれるように、一体の３偏心体構成部品はアンダーカットのないように構成されており、それにより、クランク装置１の負荷に応じた鋳造品としての形成が、重金属、非鉄金属、または軽金属から可能である。焼結部品としての構成も有利である。
一体の３偏心体構成部品が大きな剛性を有することにより、カプラー部品１０、１０’が周囲を閉止された開口８’、８”を備えることと関連し、内サイクロイド式クランク装置１の負荷能力が高くなる。周囲を閉止されたこれらの開口８’、８”により、薄壁構成の各カプラー部品１０、１０’が、案内軸受突部１２、１２’と、揺動アーム１４の軸受ピン１９用にそれぞれ直径上に配置された２つの枢着ブッシュ１８、１８’とを一体に結合する支持壁２０、２０’を含み、この支持壁２０、２０’が、その周囲輪郭に沿い、好ましくは一体に配置された補強縁部２１、２１’を有する。この皿状構成は、各カプラー部品１０、１０’を、板金プレス部品として、精密鋳造部品として、軽金属圧力鋳造部品として、または焼結部品として構成するのに適している。カプラー部品１０、１０’を案内偏心体６上に対称的に配置することにより、形状および寸法が一致することと関連し、ワット連接機構１３の２部品式のカプラー１５のために、部品１０、１０’を唯一の工具から製作し、従って同部品構成の有利性を達成するという利点が得られる。
案内偏心体６上の両方のカプラー部品１０、１０’の軸方向間隔をロックする手間を避けるために、案内軸受突部１２、１２’に係合する滑り軸受シェル１１は、外周において、周回するフランジ２２をもって、カプラー部品１０、１０’用のストッパとして形成されている。軸方向間隔のロックは、さらに、案内偏心体６を包囲しかつ２部品式の滑り軸受シェル１１上に、カプラー部品１０、１０’が案内軸受突部１２、１２’を介してプレス嵌合で配置されていることにより支援されている。最後に、軸受ピン１９の端部分に設けられた固定手段２３が、往復偏心体５、５’の方向におけるカプラー部品１０、１０’の軸方向ロックのために用いられる。さらに、カプラー部品１０、１０’においてそれぞれ直径上にある枢着ブッシュ１８、１８’を貫き通りかつ揺動アーム１４のカプラー側の枢着のために用いられる軸受ピン１９を用い、滑り軸受シェル１１上における部品１０、１０’のプレス嵌合が僅かであっても、カプラー部品１０、１０’の相対回転に対する保護が達成されている。
さらに図から見られるように、案内偏心体６には、互いに対向位置する釣合い重錘２４、２４’が取外し可能に配置されており、この場合は、釣合い重錘２４、２４’は、部分的に、各カプラー部品１０、１０’の支持壁２０、２０’から軸方向に間隔を置いている。それにより、釣合い重錘２４、２４’が、支持壁２０、２０’を越えて突出する、軸受ピン１９のロック・保持手段、つまり固定手段２３を自由に通り過ぎて回転可能である。さらに、釣合い重錘２４、２４’はそれぞれねじ山２５、２５’を具備し、またねじボルト２６、２６’を備えている。
本発明の枠内では、図１から図３には示されていないカプラー１５の部品が、案内偏心体６上で、互いに向き合った案内軸受突部をもって面一に当接し、この場合、各軸受突部には滑り軸受またはころ軸受が設けられている。
案内偏心体の両側に２個の連結肩部を具備する本発明による一体の３偏心体構成ユニットでは、直線案内要素として、その軸受開口の軸線に対し横方向で分割されたスライド部材も考えられる。このような３偏心体ユニットの場合、スライド部材の代りに２個のころ軸受が設けられ得て、それらの外側の走行リングが直線案内のために用いられる。
しかし、本発明による３偏心体構成ユニットは、案内偏心体と往復偏心体の１つとの間に１つだけの連結肩部をもって形成され得て、それにより、ワット連接機構の一体形のカプラーの配置、または一体形のスライド部材の配置、または幅広のころ軸受の配置が可能である。The present invention relates to an internal cycloid crank device for a reciprocating piston machine, in particular an internal-combustion engine equipped with opposed cylinder rows, according to the structure of the premise of claim 1.
For an internal combustion engine with a pair of cylinders arranged on the diameter, a crank device of the above type has already been proposed (see German patent application 19504890.3). In this device, in order to simplify the internal cycloid crank device or the reciprocating drive device as much as possible, two piston rods that reciprocate in the same direction in one plane and carry pistons at both ends are provided. There is only one linear guide device oriented at right angles in between. This linear guide device comprises the only guide eccentric arranged between the piston rod side reciprocating eccentrics, which cooperate with linear guide elements guided on the machine casing side.
According to the first example of the linear guide device, the guide element is provided with a Wattscher Lenker having an integrally formed coupler, and the bearing opening closed at the periphery of the coupler has an axial direction. A guide eccentric body composed of a half part is arranged. According to another example of the linear guide device, as the guide element, a slide member divided in half in the plane of the axis of the bearing opening is provided, and the slide member is integrated with the balance mass integrally. Cooperate with the guide eccentric body. In both examples, a combination of multiple parts each consisting of three eccentric bodies is combined into one component unit by means of auxiliary elements.
The object of the present invention is to avoid the configuration of a combination of three eccentric bodies, nevertheless so that each linear guide element can be arranged on the guide eccentric body using a bearing opening which is closed around, It is to improve an inner cycloid crank device of the type described above.
This problem is solved by the present invention with the measures described in claim 1. That is, the three eccentric bodies form an integral component having at least one connecting shoulder provided between the reciprocating eccentric body and the adjacent guide eccentric body. For the rotatable positioning of the linear guide element on the guide eccentric body, the linear guide element uses a bearing opening closed around the connecting shoulder The extension range in the direction of the crank pin is such that it is guided beyond the side reciprocating eccentric body and can be displaced laterally with respect to the guide eccentric body within the range of the connecting shoulder.
A feature of the present invention is that the combination of three integral eccentrics has a particularly high strength and operational certainty, along with a highly loadable linear guide element having an aperture closed around. In this case, the pairing of crank device parts is outstanding by simple assembly, that is, the linear guide element is first moved linearly beyond the reciprocating eccentric body and then moved laterally with respect to the guide eccentric body in the range of the connecting shoulder. And finally a linear movement in the direction of the guide eccentric, whereby the linear guide element is coupled to the guide eccentric.
In the present invention, when a single connecting shoulder is configured with an appropriate length between one reciprocating eccentric body and a guide eccentric body, for example, a coupler of a watt connection mechanism, a coupler of a slide member, or a guide It enables the arrangement of linear guide elements constructed in one piece, such as a roller bearing coupler with an outer running ring used for the purpose.
In an advantageous configuration of the invention, in order to make the load of the crank device symmetrical, the guide eccentric body is integrally connected to each reciprocating eccentric body via a connecting shoulder, the guide element being Thus, it consists of parts that are dimensioned to fit the extension range of the connecting shoulder and that are divided transversely to the axis of the bearing opening.
The above-described configuration according to the present invention of an integral three-eccentric component, including a connecting shoulder constructed according to the present invention, is advantageously made without undercuts, and thus each in three-eccentric component Low cost production adapted to the load of can be advantageously achieved as heavy metal castings, non-ferrous metal castings, light metal castings or as sintered parts.
As described above, according to the invention, the dividing of the guide element transversely to the peripherally closed bearing opening for the guide eccentric can be applied particularly advantageously to a coupler of a watt articulation mechanism. Instead of configuring the coupler solidly, the actual load can be taken into account and the coupler can be composed of two parts that are relatively thin and thus particularly lightweight, in which case these parts have the necessary strength Have gained from.
The two-part coupler is preferably formed from the same part, where the second part is achieved by inverting the first part about the body axis of the first part. ing. This identical part configuration of parts produced from a single tool is associated with an advantageous production as a sheet metal press part. However, it is also possible to configure the coupler part as a precision cast part, a light metal pressure cast part or a sintered part.
For a watt articulation mechanism in an inner cycloid crank device having a solidly implemented coupler, it is known to mount a swing arm on the fork-like end portion of the coupler. If the coupler is composed of two identical parts, it is possible to maintain the aforementioned pivoting manner of the swing arm and to place the coupler parts spaced apart in the axial direction so that they are in the direction of the crankpin. The dimensions of this are small compared to a half-piece configuration, and accordingly, the connecting shoulder has a correspondingly shorter extension range. As a result, the three eccentric body components having bending rigidity on one side and the cylinders adjacent to each other in parallel on the other side are more freely selected. The axial distance between the two coupler parts can preferably be determined via a flange that goes around the outer circumference of a two-part sliding bearing shell arranged between the guide eccentric and the guide bearing protrusion of the coupler part. . Placing the coupler part on the sliding bearing shell by press-fitting through the guide bearing protrusion further assists in locking the axial spacing, in which case the bearing pin located in the pivoting bushing of the coupler part Especially used to prevent relative rotation of coupler parts.
In addition to cooperating with a common sliding bearing shell, the coupler part can also cooperate rotatably with the guide eccentric via a separate sliding bearing ring. Furthermore, it is conceivable to provide one common roller bearing for both coupler parts, and it is also conceivable to provide a separate roller bearing for each coupler part.
Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
FIG. 1 is an exploded perspective view of a portion constituted by the present invention in an internal cycloid crank device of a reciprocating piston internal combustion engine.
FIG. 2 is an exploded perspective view showing a part of the crank device shown in FIG. 1 in a partially assembled state.
FIG. 3 is a perspective view of the crank device that has been assembled.
In FIG. 1, a reciprocating piston internal combustion engine (not shown) includes cylinder rows opposed to each other, and the axis lines of cylinders arranged in pairs in these cylinder rows are oriented at right angles to the crank axis line 2. . In the internal cycloid crank device 1 of the reciprocating piston internal combustion engine, a reference numeral 3 is attached to a crankshaft represented simply by a line.
Three eccentric bodies 5, 5 ′, 6 are rotatably arranged on the crankpin of the crankshaft 3 represented by the chain line 4, and the guide eccentric body 6 and two oppositely arranged on the diameter thereof are arranged. The reciprocating eccentric bodies 5 and 5 ′ are provided for a piston rod (not shown) controlled to reciprocate in the same direction. The guide eccentric body 6 cooperates with the linear guide element 7 of the linear guide device orthogonal to the reciprocating direction of the piston rod. In this case, the linear guide element 7 accommodates the guide eccentric body 6 in the bearing opening 8.
In the present invention, the reciprocating eccentric bodies 5, 5 ′ and the guide eccentric body 6 are respectively provided with connecting shoulder portions 9, 9 ′ between the reciprocating eccentric bodies 5, 5 ′ and the guide eccentric bodies 6 adjacent thereto. The connecting shoulders 9 and 9 ′ are each closed by the components 10 and 10 ′ of the linear guide element 7 divided in the transverse direction with respect to the axis of the bearing opening 8 respectively. It is provided with an extension range in the direction of the crankpin so that it can be arranged on the guide eccentric body 6 using the openings 8 ', 8 ". Especially, as shown by the arrows shown in FIG. The element parts 10, 10 'are guided over the respective reciprocating eccentrics 5, 5' to the respective connecting shoulders 9, 9 ', and in this area the respective openings 8', 8 "are subsequently guided eccentrics. 6 is shifted laterally with respect to the guide eccentric body 6 until it is aligned with Guide element parts 10, 10 ′ are positioned on the guide eccentric 6.
If the reciprocating eccentric bodies 5, 5 ′ and the guide eccentric bodies 6 have approximately the same diameter, in order to facilitate the assembly of the linear guide device parts 10, 10 ′ as described above, the respective bearing openings 8 ′, 8 "relates in diameter, for example, the guide eccentric 6, the opening 8 the bearing shell 11 of the 2-part between the guide bearing projections 12, 12 'of', 8" parts 10, 10 that form a ' Only the dimension of (FIG. 2) is selected larger. Another possibility is to select the diameter of the reciprocating eccentrics 5, 5 ′ smaller than the diameter of the guide eccentric 6.
As can be seen from FIG. 1, the integral three eccentric body component according to the present invention, in which the guide eccentric body 6 is centrally arranged between both reciprocating eccentric bodies 5, 5 ', is simply an inner cycloid crank shown in part. For the uniform load of the device 1, it has the connecting shoulders 9, 9 'of the same length. In the combination of the crank device 1 and the watt connecting mechanism 13, the coupler 15 of the watt connecting mechanism 13, which is linearly guided through the swing arm 14 and formed from the parts 10 and 10 ′, forms the linear guiding element 7. To do. By configuring the coupler 15 from two parts 10, 10 'mounted axially spaced on the guide eccentric 6, the pivoting of the oscillating arm 14 is advantageous between these parts 10, 10'. To be made. More advantageously, the coupler parts 10, 10 ′ are spaced axially so that their dimensions in the direction of the guide eccentric 6 can be reduced, which means that the connecting shoulder 9, It additionally leads to the advantage that 9 'is relatively small.
If the connecting shoulders 9 and 9 'are short, a particularly rigid integral three-eccentric component unit is obtained. In this case, the cross-section and the surface shape of the connecting shoulders 9 and 9' are further enhanced by the following: Contribute to. That is, 'peripheral surface, reciprocally eccentric 5, 5' circular cylindrical circumferential surface of the slide bearing 16 of the reciprocating eccentrics 5,5 'which is partially extended in the direction of the axis of these connecting shoulders 9,9 When is that formed by a circular cylindrical circumferential surface of the sliding bearing 17 of the guide eccentric 6 which is partially extended in the direction of the axis of the guide eccentric 6.
As can be seen from FIG. 1, the integral three-eccentric component is configured so as not to have an undercut, so that formation as a cast product according to the load of the crank device 1 can be performed by heavy metals and non-ferrous metals. Or from light metals. A configuration as a sintered part is also advantageous.
Due to the great rigidity of the integral three-eccentric component, the coupler parts 10, 10 'are provided with openings 8', 8 "that are closed around, and the load capacity of the inner cycloid crank device 1 is These apertures 8 ′, 8 ″, which are closed around, allow the thin-walled coupler parts 10, 10 ′ to be used for the guide bearing protrusions 12, 12 ′ and the bearing pin 19 of the swing arm 14. Each of which includes a support wall 20, 20 'that integrally couples two pivotal bushings 18, 18', each disposed on a diameter, the support wall 20, 20 'along its peripheral contour, preferably in one piece With reinforcing edges 21, 21 '. This dish-like configuration is suitable for configuring each coupler part 10, 10 'as a sheet metal press part, as a precision cast part, as a light metal pressure cast part, or as a sintered part. Due to the symmetrical arrangement of the coupler parts 10, 10 ′ on the guide eccentric 6, in connection with the matching in shape and dimensions, for the two-part coupler 15 of the watt articulation mechanism 13, the parts 10, The advantage is that the 10 'is made from a single tool, thus achieving the advantages of the same component construction.
In order to avoid the trouble of locking the axial distance between the two coupler parts 10, 10 ′ on the guide eccentric body 6, the sliding bearing shell 11 engaged with the guide bearing protrusions 12, 12 ′ circulates on the outer periphery. A flange 22 is formed as a stopper for the coupler component 10, 10 '. The axially spaced lock is further provided by surrounding the guide eccentric body 6 and press fitting the coupler parts 10, 10 ′ onto the two-part sliding bearing shell 11 via the guide bearing projections 12, 12 ′. Assisted by being placed. Finally, fixing means 23 provided at the end portion of the bearing pin 19 are used for axial locking of the coupler parts 10, 10 ′ in the direction of the reciprocating eccentric 5, 5 ′. Furthermore, a sliding bearing shell 11 is used by means of a bearing pin 19 which passes through the pivoting bushings 18, 18 ′ on the coupler parts 10, 10 ′ and is used for pivoting on the coupler side of the swing arm 14. Protection against relative rotation of the coupler parts 10, 10 ′ is achieved even with a slight press fit of the parts 10, 10 ′ above.
Further, as can be seen from the drawing, counterweights 24, 24 'facing each other are detachably arranged on the guide eccentric body 6, and in this case, the counterweights 24, 24' are partially Are spaced axially from the support walls 20, 20 ′ of each coupler component 10, 10 ′. Thus, the balance weight 24, 24 'is, support walls 20, 20' projects beyond the lock-holding means of the bearing pin 19, that is rotatable freely past the fixing means 23. Furthermore, the counterweights 24, 24 'are each provided with screw threads 25, 25' and are provided with screw bolts 26, 26 '.
Within the framework of the present invention, the parts of the coupler 15 not shown in FIGS. 1 to 3 abut on the guide eccentric body 6 with the guide bearing protrusions facing each other in the same plane. A sliding bearing or a roller bearing is provided on the protrusion.
In the integral three eccentric body constituting unit according to the present invention having two connecting shoulders on both sides of the guide eccentric body, a slide member divided in the transverse direction with respect to the axis of the bearing opening is also conceivable as the linear guide element. . In the case of such a three-eccentric body unit, two roller bearings can be provided instead of the slide member, and the outer traveling ring thereof is used for linear guidance.
However, the three-eccentric component unit according to the present invention can be formed with only one connecting shoulder between the guide eccentric and one of the reciprocating eccentrics, so that the integral coupler of the watt articulation mechanism An arrangement, an arrangement of integral slide members, or an arrangement of wide roller bearings are possible.

Claims

In an inner cycloid crank device for a reciprocating piston machine having a row of cylinders opposed to each other, having the following configurations:
Mounted on a crankpin (4) of the crankshaft (3) are three eccentrically arranged eccentric bodies (5, 6, 5 ') forming an integral component, and a piston rod and / or In order to control the guide rod to reciprocate in the same direction, among the eccentric bodies, the central eccentric body is the guide eccentric body (6), and both adjacent eccentric bodies are larger in diameter than the guide eccentric body. A reciprocating eccentric body (5, 5 ') disposed opposite to
In the bearing opening (8) closed around the periphery of the linear guide element (7) of the linear guide device in which the guide eccentric body (6) is arranged perpendicular to the piston rod and / or the reciprocating direction of the guide rod Is provided to be rotatable,
The eccentric component has at least a connecting shoulder (9, 9 ') between one of the reciprocating eccentrics (5 or 5') and the adjacent guide eccentric (6);
The bearing opening (8) of the linear guide element (7) has a diameter at least slightly larger than the diameter of the reciprocating eccentric (5, 5 ') on the connecting shoulder side, whereby the linear guide element (7) Being able to be guided beyond this reciprocating eccentric (5, 5 '), and
The connecting shoulders (9, 9 ') are in the range in the direction of the crank axis (2) in order to position the linear guide element (7) for rotation on the guide eccentric body (6). 7) has an extending range that can be displaced in a direction perpendicular to the axis of the guide eccentric body (6),
Crank device characterized by.

The guide eccentric body (6) is integrally connected to each reciprocating eccentric body (5, 5 ') via the connecting shoulder (9, 9'); and
The linear guide element (7) is dimensioned to fit the extension range of the connecting shoulder (9, 9 ') and is divided in a direction perpendicular to the axis of the bearing opening (8; 8', 8 ") Crank device according to claim 1, characterized in that it comprises parts (10, 10 ').

The reciprocating eccentric body (5, 5 ′) in which the peripheral surface of the connecting shoulder (9, 9 ′) of the integral three eccentric body components is partially extended in the direction of the axis of the reciprocating eccentric body (5, 5 ′). a circular cylindrical circumferential surface of), characterized in that it is formed by a circular cylindrical circumferential surface of the guide eccentric (partly extended guide the eccentric body in the direction of the axis of 6) (6) The crank device according to claim 1 or 2.

3 eccentric components integral, heavy metal castings, non-ferrous metals castings, or light metal castings or as sintered parts, characterized in that it is formed without an undercut, claims 1 3 The crank apparatus as described in one of these.

The coupler (15) of the watt articulation mechanism (13) is used as the linear guide element (7); and
The coupler (15) consists of two parts (10, 10 ') divided in a direction perpendicular to the axis of the bearing opening (8; 8', 8 "), each of which is closed around Crank device according to one of the preceding claims, characterized in that it comprises an opening (8 ', 8 ").

Each thin-walled coupler component (10, 10 ') forms a bearing opening (8', 8 ") and is located on the guide eccentric (6), and a guide bearing protrusion (12, 12 '), Support wall (20, 20 ') connecting two pivoting bushes (18, 18') arranged on the diameter for the bearing pin (19) of the swing arm (14) of the watt articulation mechanism (13) Including, and
Crank device according to one of the preceding claims, characterized in that the support wall (20, 20 ') has reinforcing edges (21, 21') along its peripheral contour.

The two-part coupler (15) is formed from the same part (10, 10 '), and
Each same part (10, 10 ') as a sheet metal press part, as a precision casting part,
The crank device according to one of claims 1 to 6, characterized in that it is formed as a light metal pressure cast part or as a sintered part.

The parts (10, 10 ') of the coupler (15) are axially spaced on the guide eccentric (6); and
The axial distance between these coupler parts (10, 10 ') is determined via a flange (22) that goes around the outer periphery of the two-part sliding bearing shell (11), and the sliding bearing shell (11) Crank device according to one of the preceding claims, characterized in that encloses the guide eccentric (6).

The coupler component (10, 10 ′) is arranged by press fitting via the guide bearing protrusion (12, 12 ′) on the sliding bearing shell (11) surrounding the guide eccentric body (6). as well as,
The coupler parts (10, 10 ') are prevented from rotating relative to each other via a bearing pin (19) provided in the pivot bush (18, 18'). The crank apparatus as described in one of thru | or 8.

Guide eccentric (6) the balance weight (24, 24 ') capable of binding to the respective coupler part (10, 10' have axially spaced from the support wall (20, 20 ') of), it Accordingly, it balance weight (24, 24 ') are support walls (20, 20' projects beyond the) is rotatable locking / holding means (23) freely pass by the bearing pin (19) The crank device according to claim 1, characterized in that:

The counterweights (24, 24 ′) have respective threads (25, 25 ′) and screw bolts (26, 26 ′) in order to be arranged opposite to each other on the guide eccentric body (6). 11. The crank device according to claim 1, wherein the crank device is provided.

The parts of the coupler (15) abut on the guide eccentric body (6) flush with guide bearing protrusions facing each other; and
12. The crank device according to claim 1, wherein each guide bearing protrusion is provided with a sliding bearing or a roller bearing.

5. The crank device according to claim 1, wherein the linear guide element is a slide member that is monolithic or divided in a direction perpendicular to the axis of the bearing opening.

5. The crank device according to claim 1, wherein one or more roller bearings arranged on the guide eccentric body (6) are used as the linear guide element.